Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing

Also see for ecoMAX pro 18 E: Installation instructions Installation instructions Instructions for use installation and servicing Instructions for use installation and servicing Instructions for use installation and servicing

Vaillant ecoMAX pro SERIES Instructions For Use Installation And Servicing Manual pdf 22 page image

14 Conversion14 Natural Gas to LPG conversion(ecoMAX pro 28E only)The ecoMAX pro 28E is able to be field adjusted for useon LPG – propane G31 gas. To enable conversion the useof a combustion analyser is necessary.Important!After converting from Natural Gas to LPG, recommissionand check boiler function as described in commissioningsection of the servicing and installation instructions.Important!This conversion must only be carried out by a compe-tent person in accordance with the Gas Safety(Installation and Use) Regulation 1998. In the UK CORGIregistered installers undertake the work to a safe andsatisfactory standard.Before starting any work:Isolate the mains electricity supply to the boiler by dis-connecting the plug at the socket outlet (if there is onlyan isolating switch remove the fuse from the switch).Turn off the gas supply at the gas service valve fitted tothe boiler.Remove the front panel, the inner front panel and thelower front panel to access the gas valve.Turn the gas valve throttle screw (Fig. 14.4) fullyclockwise.Turn the throttle back anti-clockwise 5 1/2 turns.Ensure that the gas analyser is set to the correct fuelsetting - Propane.To obtain conversion follow the procedure as below:- Connect a CO2 combustion analyser to the test pointon the flue adaptor.- Turn on the gas service cock.- Turn on the electrical supply, and slide the on/off con-trol down to the ‘I’ position to turn on the boiler. Setthe timer to continuous and turn up any room ther-mostats to call for demand.- With the boiler interface in normal operating mode,press and hold the ‘mode’ button ( ) for 10 secondsuntil a flashing ‘0’ appears.Fig. 14.1- Press the ‘-‘ key and scroll through until ‘96’ (installermode) is shown on the screen, then press the ‘mode’-button again.Fig. 14.2- Press the ‘+‘ key and scroll through until ‘8’ is shownon the left of the screen, then press the ‘mode’ buttonagain.Fig. 14.3- Set the appliance fan speed/burner to maximum bypressing the ‘+’ key until ‘2’ (burner to Pmax) is shownon the right hand side of the screen. Press the ‘mode’button again to confirm.- Check the CO 2 value, which should be 10.5 % ± 0.2 %.Allow the boiler time to reach the maximum rate(approximately 5-10 minutes).- Adjust the maximum rate CO 2 with the (‘A’) throttleusing a screwdriver to 10.5 % (rotate anti-clockwise toincrease).Instructions for Use, Installation and Servicing ecoMAX pro22